# Wave speed in a brass wire

1. Jun 14, 2008

### K3nt70

1. The problem statement, all variables and given/known data

What is the wave speed in a brass wire with a radius of 3.35×10-4 m stretched with a tension of 120 N? The density of brass is 8.60×103 kg/m^3.

2. Relevant equations

v = $$\sqrt{\frac{T}{\mu}}$$

3. The attempt at a solution

I have no clue about this problem. It gives me regular density but i need linear density in order for the formula to work and i don't know how or if i even can convert reg density to linear. Nor can i find any other relevant equations that would clear it up for me.

cheers

2. Jun 14, 2008

### Ed Aboud

Hi K3nt70.
Try find the cross-sectional area of the string and see if you can see what to do then.

3. Jun 14, 2008

### K3nt70

Wicked - got it all worked out. Thanks for the hint!

4. Jun 14, 2008

### Ed Aboud

Its cool, no problem.